Roland Hall worked as a Commissioning Editor in puzzle books for a number of years. He was responsible for book publishing with many bestselling puzzle brands, including Mensa, The Puzzler and Take A Break, and devised a number of highly popular themed puzzle books and packs on subjects as diverse as Sherlock Holmes, Star Trek, Pride and Prejudice and Dante's Inferno. He has written and contributed to many quiz and puzzle books, including Emoji Puzzles, The Great British Pub Quiz Book, Disney Brain Games (Studio Press) and the 2022 bestseller Wordle Challenge (Ivy Press).
TIM DEDOPULOS is an author, puzzle setter and publisher. He has written and edited hundreds of book. Author highlights include Rubik's Puzzles, The Great Global Treasure Hunt on Google Earth (Carlton) The Sherlock Holmes Puzzle Collection (Welbeck), and recently You Are (Not) Deadpool (Aconyte). He runs Ghostwood Books, a fair-trade small press with an emphasis on science fiction, horror and fantasy.